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प्रश्न
Write true or false for a given statement.
Equal volumes of different liquids expand by different amounts when they are heated to the same rise in temperature.
विकल्प
True
False
उत्तर
True.
APPEARS IN
संबंधित प्रश्न
Write true or false for a given statement.
Water is a bad conductor of heat.
Fill in the blank
Still air is an __________ of heat.
What do you understand by thermal expansion of a substance ?
Name two substances which expand on heating.
Why are gaps left between successive rails on a railway track ?
A glass stopper stuck in the neck of a bottle can be removed by pouring hot water on the neck of the bottle. Explain why ?
An empty glass bottle is fitted with a narrow tube at its mouth. The open end of the tube is kept in a beaker containing water. When the bottle is heated, bubbles of air are seen escaping into the water. Explain the reason.
Why are chimneys provided over furnace in factories?
Match the following
| 1. | Solid to liquid | a. | Condensation |
| 2. | Liquid to gas | b. | Deposition |
| 3. | Gas to solid | c. | Melting |
| 4. | Gas to liquid | d. | Vaporization |
When heat energy is added to a substance, the kinetic energy of its particles ______ and so the particles move at a higher speed.
